.vimeo-wrapper {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
z-index: 6;
pointer-events: none;
overflow: hidden;
}
.vimeo-wrapper iframe {
width: 100vw;
height: 56.25vw; /* Given a 16:9 aspect ratio, 9/16*100 = 56.25 */
min-height: 100vh;
min-width: 177.77vh; /* Given a 16:9 aspect ratio, 16/9*100 = 177.77 */
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}